1161091415 has 32 divisors (see below), whose sum is σ = 1664919360. Its totient is φ = 767334400.

The previous prime is 1161091369. The next prime is 1161091427. The reversal of 1161091415 is 5141901611.

It is not a de Polignac number, because 1161091415 - 2¹⁰ = 1161090391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5705 + ... + 48525.

It is an arithmetic number, because the mean of its divisors is an integer number (52028730).

Almost surely, 2^1161091415 is an apocalyptic number.

1161091415 is a deficient number, since it is larger than the sum of its proper divisors (503827945).

1161091415 is a wasteful number, since it uses less digits than its factorization.

1161091415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42883.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 1161091415 is about 34074.7914887237. The cubic root of 1161091415 is about 1051.0470025026.

The spelling of 1161091415 in words is "one billion, one hundred sixty-one million, ninety-one thousand, four hundred fifteen".